VCE Chemistry 2010 Unit 3 Exam Suggested Solutions

[darkphoenix]

Dam, i think i made too many stupid mistakes

[Blakhitman]

What is wrong with 3:1 . that is the answer isnt it? it asked for ratio. so you cant just write 3. infact 3 would almost be wrong.

It gave the calcuation you had to carry out,

and that gave an answer of 3.

[chansthename]

What is wrong with 3:1 . that is the answer isnt it? it asked for ratio. so you cant just write 3. infact 3 would almost be wrong.

it asked for:

number of moles of methanol/number of moles of POP

so I believe 3 is acceptable.

Should they have asked number of moles of methanol:number of moles of POP
Then you would be required to write 3:1

My understanding anyway

[kakar0t]

what about 3 DIVIDED BY 1 methods style?

[akira88]

BYE BYE A+
stupid misinterpretations cost me like 10 marks at least

Same here

omfg... i put C23H34O2
didnt pick up that the 22 carbons included the C from COOH fml

I did the same ****ing thing. I put in C22H33COOH AND DIDNT TAKE AWAY THE C FROM COOH.
so depressing. Turns out this exam wasn't so easy.....(not that I thought it was, well it was definitely easier than last year's for sure...)

[andy456]

It said ratio so I wrote 3:1.... bugger

[Studyinghard]

What is wrong with 3:1 . that is the answer isnt it? it asked for ratio. so you cant just write 3. infact 3 would almost be wrong.

it asked for:

number of moles of methanol/number of moles of POP

so I believe 3 is acceptable.

Should they have asked number of moles of methanol:number of moles of POP
Then you would be required to write 3:1

My understanding anyway

Nope i disagree because ratio always is X:Y. not just X.

however I think 3 will be acceptable.

and so will 3:1. but I think 3:1 is a better answer. (obviously cause I wrote it)

[stonecold]

what about 3 DIVIDED BY 1 methods style?

I did this.  If they take a mark off for this, they can go fuck themselves.  There is nothing wrong with it.

Tbh, I am pissed that that question was even on there.  That, plus the bolded triglyceride gave away the hint that the ratio wasn't 1:1.  Therefore more people get it right, which stinks.

[vietp123]

FUCKING EASY EXAM SMASHED IT 100% EASY A+ EASIEST EXAM OF MY LIFE. CHECKED OVER QUESTIONS ALL CORRECT !!!!! CELEBRATE !!!

[crayolé]

Damn, just reread the question, it asked for the value of the stoichiometric ratio
Doesnt value mean just one number?

[appianway]

Hey, misreading that question and forgetting the triglyceride was the only mistake that I found in my paper (presuming I get consequentials for the volume part of it, seeing as I had copious working and explanations)... so here's one person who didn't get it right ><

[stonecold]

shit.  more marks gone!

[Studyinghard]

Damn, just reread the question, it asked for the value of the stoichiometric ratio
Doesnt value mean just one number?

how can you have a value of the ratio? that doesnt even make sense ! or does it? SIGH

[matt123]

honestly felt like 85% + when i left the exam

just looked at the exam
made simple mistakes .. forgot to put in states for reactions
forgot to put the H+ with cr2072-

forgot to draw 0- on the structure

forgot it was 7  bonds instead 6 and also i messed up the formula

stuffed up the units of one of the questions

messed up bunsen burner question

i calculated .. about 65% .... thats a C .... im so anoy

[Stormer]

65% isn't a C. I've been getting 50% for practice exams that have equated to at least a C+. 65% is at least a B